ENERGY & FUELS
·
2024
·
IF 5.2
Shilong Xu,Wenmao Tu,Ziyi Xu,Duxin Zhang,Siqi Sun,Hongfei Pan,Haining Zhang,Yadong Wang
Silicon oxide (SiOx) is becoming a hot spot in the research of anode materials for lithium-ion batteries. However, the low initial coulombic efficiency (ICE), weak conductivity, unsatisfied rate performance, and significant volume changes during cycling of SiOx have hindered its commercial application. Herein, a silicon–carbon composite material (SiOx/C–Sn@NC) was synthesized, featuring metal tin that is embedded within and on the surface of the SiOx framework. Additionally, a nitrogen-doped carbon layer was incorporated into the material to further mitigate volume changes. Benefitted from the discrepant lithiation/delithiation potentials of Sn and Si, the formed structure significantly limits the volume changes of the formed anode during the cycle, enhancing the cycle life and stability of the SiOx/C–Sn@NC material. Additionally, multiple nodes are provided in the part where the bridged Sn is in contact with the N-doped carbon to enhance the Li+ diffusion during charge and discharge and overall conductivity, promoting the lithium-ion diffusion kinetics. The SiOx/C–Sn@NC anode displays an ICE of 73.42% at 0.5 A g–1, retaining a capacity of 680 mAh g–1 after 500 cycles. In addition, this anode also exhibits excellent cycle performance of 591 mAh g–1 after 500 cycles, with an ICE of 70.37% at a current of 2 A g–1. The prominent cycle performance and electrochemical stability of SiOx/C–Sn@NC far surpass those of commercial silicon–carbon and graphite, offering a new pathway for the commercial application of silicon oxide-based anodes.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
功能材料
·
电池技术
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DOI
高影响因子
Small
·
2023
·Vol. 19
·期 47
·2303746
·
IF 13.3
Yayun Zheng,Shasha Wei,Jitao Shang,Du Wang,Cheng Lei,Yan Zhao
To make sodium-ion batteries a realistic option for everyday energy storage, a practicable method is to enhance the kinetics of Na + reactions through the development of structurally stable electrode materials. This study utilizes ternary Sn-based dichalcogenide (SnS 1.5 Se 0.5 ) in the design of electrode material to tackle several issues that adversely hinder the performance and longevity of sodium-ion batteries. First, the incorporation of Se into the SnS structure enhances its electrical conductivity and stability. Second, the ternary composition restricts the formation of intermediates during the desodiation/sodiation process, resulting in better electrode reaction reversibility. Finally, SnS 1.5 Se 0.5 lowers the diffusion barrier of Na, thereby facilitating rapid and efficient ion transport within the electrode material. Moreover, nitrogen and sulfur dual-doped carbon (NS-C) is used to enhance surface chemistry and ionic/electrical conductivity of SnS 1.5 Se 0.5 , leading to a pseudocapacitive storage effect that presents a promising potential for high-performance energy storage devices. The study has successfully developed a SnS 1.5 Se 0.5 /NS-C anode, exhibiting remarkable rate capability and cycle stability, retaining a capacity of 647 mAh g −1 even after 10 000 cycles at 5 A g −1 in half-cell tests. In full-cell tests, Na 3 V 2 (PO 4 ) 3 //SnS 1.5 Se 0.5 /NS-C delivers a high energy density of 176.6 Wh kg −1 . In addition, the Na + storage mechanism of SnS 1.5 Se 0.5 /NS-C is explored through ex situ tests and DFT calculations. The findings suggest that the ternary Sn-based dichalcogenides can considerably enhance the performance of the anode, enabling efficient large-scale storage of sodium. These findings hold great promise for the advancement of high-performance energy storage devices for practical applications.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米技术
·
固态化学
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DOI
高影响因子
IONICS
·
2024
·Vol. 30
·期 4
·2007-2017
·
IF 2.4
Li Bangxing,Yi Xianlin,Xie Zhenjun,Wu Fei,Kang Xing,Kang Shuai,Hu Xiaolin
Composite solid electrolyte (CSE), especially the composite room temperature solid electrolyte (CRTSE), is emerging as the promising electrolyte for all-solid-state lithium batteries (ASSLB) due to their ability to combine the desirable properties of ceramic and polymer-based electrolytes and the room temperature operation condition. In this paper, the CRTSE with polyethylene oxide (PEO), bis(fluorosulfonyl)imide (LiTFSI), succinonitrile (SN), LLZTO inorganic fillers, and cross-linked ethoxylated trimethylolpropane triacrylate (ETPTA) was proposed. With the help of lithium dendrite suppression via cross-linked microscopic pore structure, enhancement of the ionic conductivity via LLZTO fillers, and wide electrochemical window via SN, the obtained LCSE showed high ionic conductivity (2.12 × 10 −4 S cm −1 ), high Li + transfer number ( t Li + = 0.55), and stable electrochemical window (5.0 V vs Li/Li + ) at room temperature. The Li symmetrical cell with LCSE can cycle over 500 h stably with current density of 0.1 mA cm −2 and 0.5 mA cm −2 at room temperature. The full solid-state LiFePO 4 cell can successfully work over 200 cycles with capacity retention ratio of about 70% at room temperature.
研究领域:
材料科学
·
电化学
·
能源存储
·
固态离子学
·
高分子化学
·
无机非金属材料
·
电池技术
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Bingbing Liu,Suying Dong,Peiying Li,Shengpeng Su,Wenjuan Wang,Shuzhen Yang,Yanfang Huang,Hu Sun,Guihong Han
Indium (In) is a typical critical metal, and the recycling of waste In-Tin oxide (ITO) target can alleviate the In resource supply scarcity. The dismantling and preprocessing of waste ITO targets inevitably introduce metallic impurities, posing significant challenges for In recovery, particularly the separation of In from Sn and the removal of other impurities. This study developed an integrated hydrometallurgical process to prepare high-purity nano-In 2 O 3 from high-impurity waste ITO, highlighting on the leaching and separation mechanisms of In, Sn, Al, and Mo. The process consists of HCl leaching for Mo separation, selective sulfide precipitation for In/Sn separation, TOA/TBP synergistic extraction for In/Al separation, and calcination for nano-In 2 O 3 preparation. Under optimal conditions, HCl leaching extracted over 94% of In, Sn, and Al while selectively suppressing Mo dissolution to below 13%. The HCl leaching, sulfide precipitation, and solvent extraction mechanisms are also discussed in this study. The final In 2 O 3 product was 99.98% pure, with about 25 nm average particle size and 77.8% overall In recovery. This work provides an efficient route for high-purity nano-In 2 O 3 production from high-impurity wastes.
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Shengqiang Zhou,Tianliang Lu,Lipeng Zhou,Xiaomei Yang
Glycerol, as the main byproduct in biodiesel production, is attractive for the synthesis of value-added chemicals with the rapid increase of the biodiesel market in recent years. In this study, we developed a bifunctional Au/Sn-Beta catalyst via a molecule linkage strategy for the one-pot catalytic conversion of glycerol to methyl lactate (MLA) with molecular oxygen as the oxidant. Bifunctional Au/Sn-Beta was constructed using β-mercaptoethylamine as a linkage molecule to anchor negative Au species on the negative surface of Sn-Beta zeolites. β-Mercaptoethylamine with a well-defined structure of head and tail functional groups was anchored on Sn-Beta zeolite through the interaction of amine groups with the framework Sn sites and weakly acidic silanols. Gold species with negative charge were captured by thiol groups of β-mercaptoethylamine anchored on Sn-Beta. Upon calcination, highly dispersed Au nanoparticles (∼2 nm) were confined in the crystal of Sn-Beta zeolite, which was proved by Tomogram-section TEM images. Linkage molecules with different structures were employed. The role of the linkage molecule was revealed by XPS, FTIR, and Raman spectroscopy. It was observed that electrons were transferred from Au sites to Sn sites, which facilitated the dispersion and stabilization of Au sites. A yield of 79.3% to MLA with 100% of glycerol conversion was achieved over the prepared Au/Sn-Beta at 160 °C for 1.5 h, which was much higher than that over Au/Sn-Beta prepared by the wet impregnation method. The positive charge on Au sites decreased the catalytic oxidation ability of the catalyst. The catalyst showed good catalytic activity and stability in ten batch reaction runs.
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DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·Vol. 46
·期 2
·117844
·
IF 6.2
Zhuangzhuang Ma,Yunhao Wang,Tianhao Rui,Yulin Lan,Linyuan Lu,Yang Yu,Mingxuan Deng,Tianxing Lan,Zhekang Zhao,Zhen Teng,Haibin Zhang
High-entropy pyrochlore ceramics with the nominal composition Eu 2 B 2 O 7 , incorporating up to five equiatomic B-site cations, were synthesized via a solid-state reaction method and evaluated their aqueous chemical durability for nuclear waste immobilization. Comprehensive characterization using XRD, Raman, and SEM analyses confirmed the formation of a single-phase pyrochlore structure with uniform and random elemental distribution. However, secondary phases were observed in the Ce- and Nb-doped samples, which is attributed to the larger ionic radius of Ce and the higher valence state of Nb. The 42 days leaching tests revealed normalized element release rates ranging from 10 −5 to 10 −7 g/(m 2 ∙d), significantly lower than those of conventional pyrochlore materials. This enhanced durability is attributed to synergistic effects of electronegativity, ionic radius, and atomic number, which together hinder cation diffusion and strengthen chemical durability at the B site. These findings demonstrate the potential of Eu 2 B 2 O 7 high-entropy pyrochlore ceramics as long-term host materials for high-level radioactive waste. This study provides a valuable resource for enriching the thermophysical properties database of B-site high-entropy pyrochlore solidification, thereby supporting their engineering development.
研究领域:
材料科学
·
核化学
·
无机非金属材料
·
放射性废物处理
·
固体化学
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产品关联
DOI
高影响因子
SOLAR ENERGY
·
2021
·
IF 5.742
Ting Wang,Jiayong Zhang,Bin Yao,Yongfeng Li,Zhanhui Ding,Chunkai Wang,Jia Liu
Five types of Cu 2 ZnSn(S,Se) 4 (CZTSSe) films were fabricated by selenization of Cu 2 ZnSnS 4 (CZTS) precursor films preparing through Cu-Zn-Sn-S precursor solutions with nominal Cu + /(Cu + +Cu 2+ ) ratio of 0, 0.2, 0.4, 0.8 and 1. Five types of CZTSSe solar cells were prepared by using the five types of CZTSSe films as absorbers, respectively. The crystal quality and phase composition of the CZTS and CZTSSe films were characterized by XRD, Raman and SEM, and the photovoltaic performance for the CZTSSe solar cells were measured by J-V and EQE. It is found that the CZTS film consists of kesterite CZTS when the ratio is 0 and of kesterite CZTS together with a small amount of SnS when the ratio is 0.2 to 1. All of the CZTSSe films are comprised of kesterite CZTSSe and a small amount of Zn(S,Se). The crystal quality and lattice constants of the kesterite CZTSSe increase with increasing the ratio, while the amount of Zn(S,Se) decreases with increasing the ratio and almost to zero as the ratio is 1. The power conversion efficiency ( PCE ) of the CZTSSe solar cells increases from 5.47% to 8.43% as the ratio increases from 0 to 1, which is due to improvement in short-circuit current density ( J sc ) and filling factor ( FF ) and decrease in open circuit voltage deficit ( V oc , def ). The influence mechanism of the ratio on the PCE is suggested by analyzing effect of the ratio on electrical parameters of the CZTSSe solar cells.
研究领域:
光伏技术
·
材料科学
·
半导体薄膜
·
太阳能电池技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Tian Gan,Hexuan Song,Xinqiang Fan,Ye Liu,Shouqing Liu,Yicheng Zhao,Yongdan Li
A crucial challenge in the commercialization of Ni-based materials as the anode of solid oxide fuel cell is the fast voltage drop due to carbon deposition and structural degradation during cell operation. Herein, Sn-doped Ce 0.8 Sm 0.2 O 2−δ (SDC) supported Sn-Ni alloy anode is rationally designed and prepared, via a simple and convenient dual-modification strategy. The substitution of Sn of Ce in the oxide phase enhances the mobility of lattice oxygen in SDC. Meanwhile, Sn exsolves partially from the oxide phase and forms Ni 3 Sn and Ni 3 Sn 2 intermetallic compounds with Ni after reduction. The composite anode thus formed achieves unprecedent activity in the electrochemical oxidation of H 2 and CH 3 OH. The maximum power densities of a cell supported by 500 μm-thick Ce 0.8 Sm 0.2 O 2−δ -carbonate electrolyte layer with the Ni-Ce 0.7 Sn 0.1 Sm 0.2 O 2−δ (Ni-SSn 10 DC) anode reach 1.99 and 2.11 W cm −2 at 700 °C, respectively for using H 2 and methanol as fuels. The doping of Sn also remarkably enhances the coking resistance of the anode. This work opens a path on the design of high-performance SOFC anode.
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DOI
高影响因子
Foods
·
2022
·Vol. 11
·期 14
·2087
·
IF 5.561
Huiquan Zhu,Xiaodan Wang,Wenyuan Zhang,Yumeng Zhang,Shuwen Zhang,Xiaoyang Pang,Jing Lu,Jiaping Lv
The objective of this study was to detect the influence of dietary Schizochytrium microalgae on milk composition, milk fatty acids, and milk sn-2 fatty acids in goat’s milk. Firstly, we could see that the fat content increased in low microalgae supplementation goat’s milk (LM, 15 g/day) and the lactose content decreased in medium microalgae supplementation goat’s milk (MM, 25 g/day) compared with control goat’s milk (C, 0 g/day). Moreover, the absolute concentration of the docosahexaenoic acid (DHA) of LM, MM, and high microalgae supplementation (HM, 35 g/day) goat’s milk was 29.485, 32.351, and 24.817 mg/100 g raw milk, respectively, which were all higher than that in the control goat’s milk with 4.668 mg/100 g raw milk. In addition, the sn-2 DHA content increased in MM and HM goat’s milk. However, the decreasing trend of the sn-2 DHA content was observed in LM goat’s milk. As for other fatty acids, the oleic acid (C18:1n9c) and linolenic acid (C18:3n3) content decreased and increased, respectively, in all experimental goat milk. Finally, an interesting phenomenon was found, which was that docosanoic acid (C22:0) and tetracosenic acid (C24:1) were only detected in test goat’s milk. Consequently, the phenomena of this study demonstrated that dietary Schizochytrium microalgae have an obvious effect on the fatty acid and sn-2 fatty acid profile of goat’s milk, and they provide an effective method to improve the content of goat’s milk DHA in practical production.Keywords:microalgae;DHA;absolute concentration;sn-2 fatty acids;goat milk
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产品关联
DOI
PubMed
高影响因子
JOM
·
2021
·Vol. 74
·期 2
·622-633
·
IF 2.474
Liu Zhihong,Ye Fengchun,Chen Rui,Wang Hongjun,Xia Longgong
Halogen-containing organic components in waste electrical and electronic equipment have an obvious influence on the distribution behaviors of valuable metals during the smelting processes. However, the mechanism is still incomplete in the literature. The equilibration-quenching-(ICP+EPMA) experimental technique has been applied in studying the partitioning behaviors of Au, Ag, and Sn in the Cu-FeO x -SiO 2 -CaO-Al 2 O 3 smelting system in the presence of halogen elements (F, Cl, Br). The obtained results showed that: (1) 93% Au terminated into the alloy phase in CaF 2 adding experiments, and a maximum of 32% Au reported to the gas phase in CaCl 2 or CaBr 2 adding experiments; (2) 22–49% Ag entered the gas phase when adding CaF 2 into the system, and 3–34% Ag entered into the gas phase when adding CaCl 2 or CaBr 2 ; and (3) halogen elements influenced Sn dramatically, and portions of Sn in the gas phase and slag phase increased along with increasing temperature or halides dosage.
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DOI
高影响因子
FOOD CHEMISTRY
·
2021
·
IF 7.514
Ruiguo Cui,Long Xu,Dongming Lan,Bo Yang,Yonghua Wang
Our study offers a novel sn -1,3 specific lipase MAJ1 from marine member Janibacter sp. strain HTCC2649 for preparing long-medium-long (LML) type structured triacylglycerols (TAGs). Firstly, the resin ECR1030 was selected as a suitable support for the immobilization of lipase MAJ1. An efficient synthesis of LML-type structured TAGs by the immobilized lipase MAJ1-catalyzed interesterification of methyl palmitate and tricaprylin was studied in a solvent-free system. The reaction conditions, including substrate molar ratio, temperature and enzyme loading, were optimized. Under the optimum conditions (immobilized lipase MAJ1 of 45 U/g, substrate molar ratio of 4:1, temperature of 35 °C, reaction time of 24 h), the structured TAGs with double long chains (DLCST) were obtained in a yield of 44.3 mol%. Secondly, multi-dimensional mass spectrometry-based shotgun lipidomics (MDMS-SL) was employed to quantify each TAG positional isomer in DLCST. The content of 1,3-dipalmitoyl-2-capryloyl- sn -glycerol in DLCST was 97.6% determined by the MDMS-SL technology.
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DOI
PubMed
高影响因子
ORE GEOLOGY REVIEWS
·
2021
·
IF 3.809
Ye Qiu,Rongqing Zhang,I-Ming Chou,Xiaolin Wang,Wenxuan Hu,Wenlan Zhang,Jianjun Lu,Guanglai Li,Zhen Li
Boron (B) is an important volatile component in many ore-forming fluids of hydrothermal deposits related to granites. The Maoping and Piaotang W-Sn deposits are typical magmatic-hydrothermal deposits located in South China. In this study, boron (i.e., H 3 BO 3 )-rich fluid inclusions are discovered in the above two deposits through in situ Raman spectrosocpic analyses. Based on careful experimental calibrations, we calculated the ratio of relative molar scattering factors between water and H 3 BO 3 ( J H 2 O / J H 3 B O 3 ). In addition, the relationship between salinity and J H 2 O / J H 3 B O 3 was constructed. Then, Raman spectroscopic quantification of the NaCl-H 3 BO 3 -H 2 O solutions was proposed. Because corrections for the response function of the spectrometer and the influences of the wavenumber and temperature on the spectral intensity were applied, our Raman spectroscopic quantifications allow comparison across different laboratories. The salinity [ m NaCl in m (mol/kg H 2 O)] and molality of B ( m H 3 BO 3 ) for topaz-hosted fluid inclusions at the Maoping W-Sn deposit were determined to be 0.29–1.48 m and 0.06–0.46 m , respectively. A large quartz crystal was collected from a wolframite-bearing quartz vein of the Piaotang W-Sn deposit. The H 3 BO 3 concentration of fluid inclusions in this crystal was determined using Raman spectroscopy. From the core to the rim, m H 3 BO 3 and m NaCl do not show monotonic changes; m H 3 BO 3 fluctuates between 0.11 and 0.33 m , while m NaCl ranges from 0.11 to 1.41 m . Further thermodynamic calculations revealed moderately acidic ore-forming fluids with pH ranging from 4.9 to 5.1 at 23 °C. The fluctuation of m H 3 BO 3 during the growth of a single quartz crystal indicates the episodic replenishment of magmatic-hydrothermal fluids. In addition, microthermometric measurement can result in non-negligible uncertainties in the fluid compostion determination for such complex NaCl-H 2 O-H 3 BO 3 -CO 2 -N 2 -CH 4 fluid system. Alternatively, Raman spectroscopy can provide non-destructive and fast quantification of such fluid inclusions based on careful experimental calibrations.
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高影响因子
危险品化学品经营许可证（带存储）